Finding the Third Proportional to 67,129 and 156,782.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,129 : 156,782.50 = 156,782.50 : x
2. Step 2: Convert to fraction form
   67,129/156,782.50 = 156,782.50/x
3. Step 3: Cross multiply
   67,129x = 156,782.50 × 156,782.50
4. Step 4: Simplify right side
   67,129x = 24,580,752,306.25
5. Step 5: Solve for x
   x = 24,580,752,306.25/67,129
6. Step 6: Final answer
   x = 366,171.88