Finding the Third Proportional to 515,151 and 788,024.50

Step by Step Solution

1. Step 1: Write the proportion equation
   515,151 : 788,024.50 = 788,024.50 : x
2. Step 2: Convert to fraction form
   515,151/788,024.50 = 788,024.50/x
3. Step 3: Cross multiply
   515,151x = 788,024.50 × 788,024.50
4. Step 4: Simplify right side
   515,151x = 620,982,612,600.25
5. Step 5: Solve for x
   x = 620,982,612,600.25/515,151
6. Step 6: Final answer
   x = 1,205,438.04