Finding the Third Proportional to 53,391 and 72,391.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,391 : 72,391.50 = 72,391.50 : x
2. Step 2: Convert to fraction form
   53,391/72,391.50 = 72,391.50/x
3. Step 3: Cross multiply
   53,391x = 72,391.50 × 72,391.50
4. Step 4: Simplify right side
   53,391x = 5,240,529,272.25
5. Step 5: Solve for x
   x = 5,240,529,272.25/53,391
6. Step 6: Final answer
   x = 98,153.80