Finding the Third Proportional to 53,220 and 88,696.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,220 : 88,696.50 = 88,696.50 : x
2. Step 2: Convert to fraction form
   53,220/88,696.50 = 88,696.50/x
3. Step 3: Cross multiply
   53,220x = 88,696.50 × 88,696.50
4. Step 4: Simplify right side
   53,220x = 7,867,069,112.25
5. Step 5: Solve for x
   x = 7,867,069,112.25/53,220
6. Step 6: Final answer
   x = 147,821.67