Finding the Third Proportional to 193,688.50 and 418,499

Step by Step Solution

1. Step 1: Write the proportion equation
   193,688.50 : 418,499 = 418,499 : x
2. Step 2: Convert to fraction form
   193,688.50/418,499 = 418,499/x
3. Step 3: Cross multiply
   193,688.50x = 418,499 × 418,499
4. Step 4: Simplify right side
   193,688.50x = 175,141,413,001
5. Step 5: Solve for x
   x = 175,141,413,001/193,688.50
6. Step 6: Final answer
   x = 904,242.70