Finding the Third Proportional to 420,930,320,790.94 and 864,175,384,123.90

Step by Step Solution

1. Step 1: Write the proportion equation
   420,930,320,790.94 : 864,175,384,123.90 = 864,175,384,123.90 : x
2. Step 2: Convert to fraction form
   420,930,320,790.94/864,175,384,123.90 = 864,175,384,123.90/x
3. Step 3: Cross multiply
   420,930,320,790.94x = 864,175,384,123.90 × 864,175,384,123.90
4. Step 4: Simplify right side
   420,930,320,790.94x = 746,799,094,525,690,168,475,648
5. Step 5: Solve for x
   x = 746,799,094,525,690,168,475,648/420,930,320,790.94
6. Step 6: Final answer
   x = 1,774,163,222,840.38