Finding the Third Proportional to 45,215.72 and 66,470.63

Step by Step Solution

1. Step 1: Write the proportion equation
   45,215.72 : 66,470.63 = 66,470.63 : x
2. Step 2: Convert to fraction form
   45,215.72/66,470.63 = 66,470.63/x
3. Step 3: Cross multiply
   45,215.72x = 66,470.63 × 66,470.63
4. Step 4: Simplify right side
   45,215.72x = 4,418,343,987.89
5. Step 5: Solve for x
   x = 4,418,343,987.89/45,215.72
6. Step 6: Final answer
   x = 97,716.99