Finding the Third Proportional to 4,193,478 and 9,172,076

Step by Step Solution

1. Step 1: Write the proportion equation
   4,193,478 : 9,172,076 = 9,172,076 : x
2. Step 2: Convert to fraction form
   4,193,478/9,172,076 = 9,172,076/x
3. Step 3: Cross multiply
   4,193,478x = 9,172,076 × 9,172,076
4. Step 4: Simplify right side
   4,193,478x = 84,126,978,149,776
5. Step 5: Solve for x
   x = 84,126,978,149,776/4,193,478
6. Step 6: Final answer
   x = 20,061,385.36