Finding the Third Proportional to 517,673,253 and 728,142,007.50

Step by Step Solution

1. Step 1: Write the proportion equation
   517,673,253 : 728,142,007.50 = 728,142,007.50 : x
2. Step 2: Convert to fraction form
   517,673,253/728,142,007.50 = 728,142,007.50/x
3. Step 3: Cross multiply
   517,673,253x = 728,142,007.50 × 728,142,007.50
4. Step 4: Simplify right side
   517,673,253x = 530,190,783,086,130,048
5. Step 5: Solve for x
   x = 530,190,783,086,130,048/517,673,253
6. Step 6: Final answer
   x = 1,024,180,368.63