Finding the Third Proportional to 143,403,816 and 314,383,488

Step by Step Solution

1. Step 1: Write the proportion equation
   143,403,816 : 314,383,488 = 314,383,488 : x
2. Step 2: Convert to fraction form
   143,403,816/314,383,488 = 314,383,488/x
3. Step 3: Cross multiply
   143,403,816x = 314,383,488 × 314,383,488
4. Step 4: Simplify right side
   143,403,816x = 98,836,977,527,046,144
5. Step 5: Solve for x
   x = 98,836,977,527,046,144/143,403,816
6. Step 6: Final answer
   x = 689,221,390.92