Finding the Third Proportional to 4,216,528 and 9,272,716

Step by Step Solution

1. Step 1: Write the proportion equation
   4,216,528 : 9,272,716 = 9,272,716 : x
2. Step 2: Convert to fraction form
   4,216,528/9,272,716 = 9,272,716/x
3. Step 3: Cross multiply
   4,216,528x = 9,272,716 × 9,272,716
4. Step 4: Simplify right side
   4,216,528x = 85,983,262,016,656
5. Step 5: Solve for x
   x = 85,983,262,016,656/4,216,528
6. Step 6: Final answer
   x = 20,391,958.03