Finding the Third Proportional to 51,620.63 and 68,029.88

Step by Step Solution

1. Step 1: Write the proportion equation
   51,620.63 : 68,029.88 = 68,029.88 : x
2. Step 2: Convert to fraction form
   51,620.63/68,029.88 = 68,029.88/x
3. Step 3: Cross multiply
   51,620.63x = 68,029.88 × 68,029.88
4. Step 4: Simplify right side
   51,620.63x = 4,628,063,892.52
5. Step 5: Solve for x
   x = 4,628,063,892.52/51,620.63
6. Step 6: Final answer
   x = 89,655.32