Finding the Third Proportional to 66,123.50 and 156,067.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,123.50 : 156,067.50 = 156,067.50 : x
2. Step 2: Convert to fraction form
   66,123.50/156,067.50 = 156,067.50/x
3. Step 3: Cross multiply
   66,123.50x = 156,067.50 × 156,067.50
4. Step 4: Simplify right side
   66,123.50x = 24,357,064,556.25
5. Step 5: Solve for x
   x = 24,357,064,556.25/66,123.50
6. Step 6: Final answer
   x = 368,357.16