Finding the Third Proportional to 53,938.50 and 84,427.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,938.50 : 84,427.50 = 84,427.50 : x
2. Step 2: Convert to fraction form
   53,938.50/84,427.50 = 84,427.50/x
3. Step 3: Cross multiply
   53,938.50x = 84,427.50 × 84,427.50
4. Step 4: Simplify right side
   53,938.50x = 7,128,002,756.25
5. Step 5: Solve for x
   x = 7,128,002,756.25/53,938.50
6. Step 6: Final answer
   x = 132,150.56