Finding the Third Proportional to 66,140 and 156,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,140 : 156,100.50 = 156,100.50 : x
2. Step 2: Convert to fraction form
   66,140/156,100.50 = 156,100.50/x
3. Step 3: Cross multiply
   66,140x = 156,100.50 × 156,100.50
4. Step 4: Simplify right side
   66,140x = 24,367,366,100.25
5. Step 5: Solve for x
   x = 24,367,366,100.25/66,140
6. Step 6: Final answer
   x = 368,421.02