Finding the Third Proportional to 78,316.88 and 170,748

Step by Step Solution

1. Step 1: Write the proportion equation
   78,316.88 : 170,748 = 170,748 : x
2. Step 2: Convert to fraction form
   78,316.88/170,748 = 170,748/x
3. Step 3: Cross multiply
   78,316.88x = 170,748 × 170,748
4. Step 4: Simplify right side
   78,316.88x = 29,154,879,504
5. Step 5: Solve for x
   x = 29,154,879,504/78,316.88
6. Step 6: Final answer
   x = 372,268.17