Finding the Third Proportional to 54,219.50 and 83,443

Step by Step Solution

1. Step 1: Write the proportion equation
   54,219.50 : 83,443 = 83,443 : x
2. Step 2: Convert to fraction form
   54,219.50/83,443 = 83,443/x
3. Step 3: Cross multiply
   54,219.50x = 83,443 × 83,443
4. Step 4: Simplify right side
   54,219.50x = 6,962,734,249
5. Step 5: Solve for x
   x = 6,962,734,249/54,219.50
6. Step 6: Final answer
   x = 128,417.53