Finding the Third Proportional to 42,220.50 and 65,886.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,220.50 : 65,886.50 = 65,886.50 : x
2. Step 2: Convert to fraction form
   42,220.50/65,886.50 = 65,886.50/x
3. Step 3: Cross multiply
   42,220.50x = 65,886.50 × 65,886.50
4. Step 4: Simplify right side
   42,220.50x = 4,341,030,882.25
5. Step 5: Solve for x
   x = 4,341,030,882.25/42,220.50
6. Step 6: Final answer
   x = 102,818.08