Finding the Third Proportional to 156,653 and 238,657.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,653 : 238,657.50 = 238,657.50 : x
2. Step 2: Convert to fraction form
   156,653/238,657.50 = 238,657.50/x
3. Step 3: Cross multiply
   156,653x = 238,657.50 × 238,657.50
4. Step 4: Simplify right side
   156,653x = 56,957,402,306.25
5. Step 5: Solve for x
   x = 56,957,402,306.25/156,653
6. Step 6: Final answer
   x = 363,589.60