Finding the Third Proportional to 641,754,736 and 1,406,538,064

Step by Step Solution

1. Step 1: Write the proportion equation
   641,754,736 : 1,406,538,064 = 1,406,538,064 : x
2. Step 2: Convert to fraction form
   641,754,736/1,406,538,064 = 1,406,538,064/x
3. Step 3: Cross multiply
   641,754,736x = 1,406,538,064 × 1,406,538,064
4. Step 4: Simplify right side
   641,754,736x = 1,978,349,325,480,868,096
5. Step 5: Solve for x
   x = 1,978,349,325,480,868,096/641,754,736
6. Step 6: Final answer
   x = 3,082,718,700.00