Finding the Third Proportional to 38,784.50 and 55,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   38,784.50 : 55,920.50 = 55,920.50 : x
2. Step 2: Convert to fraction form
   38,784.50/55,920.50 = 55,920.50/x
3. Step 3: Cross multiply
   38,784.50x = 55,920.50 × 55,920.50
4. Step 4: Simplify right side
   38,784.50x = 3,127,102,320.25
5. Step 5: Solve for x
   x = 3,127,102,320.25/38,784.50
6. Step 6: Final answer
   x = 80,627.63