Finding the Third Proportional to 72,357 and 156,409.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,357 : 156,409.50 = 156,409.50 : x
2. Step 2: Convert to fraction form
   72,357/156,409.50 = 156,409.50/x
3. Step 3: Cross multiply
   72,357x = 156,409.50 × 156,409.50
4. Step 4: Simplify right side
   72,357x = 24,463,931,690.25
5. Step 5: Solve for x
   x = 24,463,931,690.25/72,357
6. Step 6: Final answer
   x = 338,100.41