Finding the Third Proportional to 19,690,979,762 and 42,368,460,211

Step by Step Solution

1. Step 1: Write the proportion equation
   19,690,979,762 : 42,368,460,211 = 42,368,460,211 : x
2. Step 2: Convert to fraction form
   19,690,979,762/42,368,460,211 = 42,368,460,211/x
3. Step 3: Cross multiply
   19,690,979,762x = 42,368,460,211 × 42,368,460,211
4. Step 4: Simplify right side
   19,690,979,762x = 1,795,086,420,651,090,116,608
5. Step 5: Solve for x
   x = 1,795,086,420,651,090,116,608/19,690,979,762
6. Step 6: Final answer
   x = 91,162,879,772.76