Finding the Third Proportional to 138,160.50 and 296,499

Step by Step Solution

1. Step 1: Write the proportion equation
   138,160.50 : 296,499 = 296,499 : x
2. Step 2: Convert to fraction form
   138,160.50/296,499 = 296,499/x
3. Step 3: Cross multiply
   138,160.50x = 296,499 × 296,499
4. Step 4: Simplify right side
   138,160.50x = 87,911,657,001
5. Step 5: Solve for x
   x = 87,911,657,001/138,160.50
6. Step 6: Final answer
   x = 636,300.95