Finding the Third Proportional to 53,673 and 78,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,673 : 78,868.50 = 78,868.50 : x
2. Step 2: Convert to fraction form
   53,673/78,868.50 = 78,868.50/x
3. Step 3: Cross multiply
   53,673x = 78,868.50 × 78,868.50
4. Step 4: Simplify right side
   53,673x = 6,220,240,292.25
5. Step 5: Solve for x
   x = 6,220,240,292.25/53,673
6. Step 6: Final answer
   x = 115,891.42