Finding the Third Proportional to 30,933.47 and 67,420.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,933.47 : 67,420.50 = 67,420.50 : x
2. Step 2: Convert to fraction form
   30,933.47/67,420.50 = 67,420.50/x
3. Step 3: Cross multiply
   30,933.47x = 67,420.50 × 67,420.50
4. Step 4: Simplify right side
   30,933.47x = 4,545,523,820.25
5. Step 5: Solve for x
   x = 4,545,523,820.25/30,933.47
6. Step 6: Final answer
   x = 146,945.17