Finding the Third Proportional to 78,465.50 and 100,748

Step by Step Solution

1. Step 1: Write the proportion equation
   78,465.50 : 100,748 = 100,748 : x
2. Step 2: Convert to fraction form
   78,465.50/100,748 = 100,748/x
3. Step 3: Cross multiply
   78,465.50x = 100,748 × 100,748
4. Step 4: Simplify right side
   78,465.50x = 10,150,159,504
5. Step 5: Solve for x
   x = 10,150,159,504/78,465.50
6. Step 6: Final answer
   x = 129,358.25