Finding the Third Proportional to 36,415.50 and 79,240.50

Step by Step Solution

1. Step 1: Write the proportion equation
   36,415.50 : 79,240.50 = 79,240.50 : x
2. Step 2: Convert to fraction form
   36,415.50/79,240.50 = 79,240.50/x
3. Step 3: Cross multiply
   36,415.50x = 79,240.50 × 79,240.50
4. Step 4: Simplify right side
   36,415.50x = 6,279,056,840.25
5. Step 5: Solve for x
   x = 6,279,056,840.25/36,415.50
6. Step 6: Final answer
   x = 172,428.14