Finding the Third Proportional to 134,431.50 and 292,434

Step by Step Solution

1. Step 1: Write the proportion equation
   134,431.50 : 292,434 = 292,434 : x
2. Step 2: Convert to fraction form
   134,431.50/292,434 = 292,434/x
3. Step 3: Cross multiply
   134,431.50x = 292,434 × 292,434
4. Step 4: Simplify right side
   134,431.50x = 85,517,644,356
5. Step 5: Solve for x
   x = 85,517,644,356/134,431.50
6. Step 6: Final answer
   x = 636,142.90