Finding the Third Proportional to 158,409 and 243,156.75

Step by Step Solution

1. Step 1: Write the proportion equation
   158,409 : 243,156.75 = 243,156.75 : x
2. Step 2: Convert to fraction form
   158,409/243,156.75 = 243,156.75/x
3. Step 3: Cross multiply
   158,409x = 243,156.75 × 243,156.75
4. Step 4: Simplify right side
   158,409x = 59,125,205,070.56
5. Step 5: Solve for x
   x = 59,125,205,070.56/158,409
6. Step 6: Final answer
   x = 373,243.98