Finding the Third Proportional to 168,991,024 and 356,139,620

Step by Step Solution

1. Step 1: Write the proportion equation
   168,991,024 : 356,139,620 = 356,139,620 : x
2. Step 2: Convert to fraction form
   168,991,024/356,139,620 = 356,139,620/x
3. Step 3: Cross multiply
   168,991,024x = 356,139,620 × 356,139,620
4. Step 4: Simplify right side
   168,991,024x = 126,835,428,933,744,400
5. Step 5: Solve for x
   x = 126,835,428,933,744,400/168,991,024
6. Step 6: Final answer
   x = 750,545,359.93