Finding the Third Proportional to 42,999.50 and 65,148.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,999.50 : 65,148.50 = 65,148.50 : x
2. Step 2: Convert to fraction form
   42,999.50/65,148.50 = 65,148.50/x
3. Step 3: Cross multiply
   42,999.50x = 65,148.50 × 65,148.50
4. Step 4: Simplify right side
   42,999.50x = 4,244,327,052.25
5. Step 5: Solve for x
   x = 4,244,327,052.25/42,999.50
6. Step 6: Final answer
   x = 98,706.43