Finding the Third Proportional to 641,754,737 and 1,406,538,066

Step by Step Solution

1. Step 1: Write the proportion equation
   641,754,737 : 1,406,538,066 = 1,406,538,066 : x
2. Step 2: Convert to fraction form
   641,754,737/1,406,538,066 = 1,406,538,066/x
3. Step 3: Cross multiply
   641,754,737x = 1,406,538,066 × 1,406,538,066
4. Step 4: Simplify right side
   641,754,737x = 1,978,349,331,107,020,288
5. Step 5: Solve for x
   x = 1,978,349,331,107,020,288/641,754,737
6. Step 6: Final answer
   x = 3,082,718,703.96