Finding the Third Proportional to 78,972.75 and 168,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,972.75 : 168,799.50 = 168,799.50 : x
2. Step 2: Convert to fraction form
   78,972.75/168,799.50 = 168,799.50/x
3. Step 3: Cross multiply
   78,972.75x = 168,799.50 × 168,799.50
4. Step 4: Simplify right side
   78,972.75x = 28,493,271,200.25
5. Step 5: Solve for x
   x = 28,493,271,200.25/78,972.75
6. Step 6: Final answer
   x = 360,798.77