Finding the Third Proportional to 137,654.50 and 208,387

Step by Step Solution

1. Step 1: Write the proportion equation
   137,654.50 : 208,387 = 208,387 : x
2. Step 2: Convert to fraction form
   137,654.50/208,387 = 208,387/x
3. Step 3: Cross multiply
   137,654.50x = 208,387 × 208,387
4. Step 4: Simplify right side
   137,654.50x = 43,425,141,769
5. Step 5: Solve for x
   x = 43,425,141,769/137,654.50
6. Step 6: Final answer
   x = 315,464.75