Finding the Third Proportional to 178,248.50 and 387,236

Step by Step Solution

1. Step 1: Write the proportion equation
   178,248.50 : 387,236 = 387,236 : x
2. Step 2: Convert to fraction form
   178,248.50/387,236 = 387,236/x
3. Step 3: Cross multiply
   178,248.50x = 387,236 × 387,236
4. Step 4: Simplify right side
   178,248.50x = 149,951,719,696
5. Step 5: Solve for x
   x = 149,951,719,696/178,248.50
6. Step 6: Final answer
   x = 841,250.95