Finding the Third Proportional to 138,187 and 292,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,187 : 292,981.50 = 292,981.50 : x
2. Step 2: Convert to fraction form
   138,187/292,981.50 = 292,981.50/x
3. Step 3: Cross multiply
   138,187x = 292,981.50 × 292,981.50
4. Step 4: Simplify right side
   138,187x = 85,838,159,342.25
5. Step 5: Solve for x
   x = 85,838,159,342.25/138,187
6. Step 6: Final answer
   x = 621,173.91