Finding the Third Proportional to 4,179,429 and 8,535,978

Step by Step Solution

1. Step 1: Write the proportion equation
   4,179,429 : 8,535,978 = 8,535,978 : x
2. Step 2: Convert to fraction form
   4,179,429/8,535,978 = 8,535,978/x
3. Step 3: Cross multiply
   4,179,429x = 8,535,978 × 8,535,978
4. Step 4: Simplify right side
   4,179,429x = 72,862,920,416,484
5. Step 5: Solve for x
   x = 72,862,920,416,484/4,179,429
6. Step 6: Final answer
   x = 17,433,702.17