Finding the Third Proportional to 35,219.81 and 78,310.55

Step by Step Solution

1. Step 1: Write the proportion equation
   35,219.81 : 78,310.55 = 78,310.55 : x
2. Step 2: Convert to fraction form
   35,219.81/78,310.55 = 78,310.55/x
3. Step 3: Cross multiply
   35,219.81x = 78,310.55 × 78,310.55
4. Step 4: Simplify right side
   35,219.81x = 6,132,541,751.86
5. Step 5: Solve for x
   x = 6,132,541,751.86/35,219.81
6. Step 6: Final answer
   x = 174,121.93