Finding the Third Proportional to 53,239 and 79,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,239 : 79,399.50 = 79,399.50 : x
2. Step 2: Convert to fraction form
   53,239/79,399.50 = 79,399.50/x
3. Step 3: Cross multiply
   53,239x = 79,399.50 × 79,399.50
4. Step 4: Simplify right side
   53,239x = 6,304,280,600.25
5. Step 5: Solve for x
   x = 6,304,280,600.25/53,239
6. Step 6: Final answer
   x = 118,414.71