Finding the Third Proportional to 35,680.50 and 54,859.50

Step by Step Solution

1. Step 1: Write the proportion equation
   35,680.50 : 54,859.50 = 54,859.50 : x
2. Step 2: Convert to fraction form
   35,680.50/54,859.50 = 54,859.50/x
3. Step 3: Cross multiply
   35,680.50x = 54,859.50 × 54,859.50
4. Step 4: Simplify right side
   35,680.50x = 3,009,564,740.25
5. Step 5: Solve for x
   x = 3,009,564,740.25/35,680.50
6. Step 6: Final answer
   x = 84,347.61