Finding the Third Proportional to 30,223.13 and 42,278.20

Step by Step Solution

1. Step 1: Write the proportion equation
   30,223.13 : 42,278.20 = 42,278.20 : x
2. Step 2: Convert to fraction form
   30,223.13/42,278.20 = 42,278.20/x
3. Step 3: Cross multiply
   30,223.13x = 42,278.20 × 42,278.20
4. Step 4: Simplify right side
   30,223.13x = 1,787,446,459.48
5. Step 5: Solve for x
   x = 1,787,446,459.48/30,223.13
6. Step 6: Final answer
   x = 59,141.68