Finding the Third Proportional to 420,694.50 and 912,372

Step by Step Solution

1. Step 1: Write the proportion equation
   420,694.50 : 912,372 = 912,372 : x
2. Step 2: Convert to fraction form
   420,694.50/912,372 = 912,372/x
3. Step 3: Cross multiply
   420,694.50x = 912,372 × 912,372
4. Step 4: Simplify right side
   420,694.50x = 832,422,666,384
5. Step 5: Solve for x
   x = 832,422,666,384/420,694.50
6. Step 6: Final answer
   x = 1,978,686.83