Finding the Third Proportional to 4,215,700 and 9,070,789

Step by Step Solution

1. Step 1: Write the proportion equation
   4,215,700 : 9,070,789 = 9,070,789 : x
2. Step 2: Convert to fraction form
   4,215,700/9,070,789 = 9,070,789/x
3. Step 3: Cross multiply
   4,215,700x = 9,070,789 × 9,070,789
4. Step 4: Simplify right side
   4,215,700x = 82,279,213,082,521
5. Step 5: Solve for x
   x = 82,279,213,082,521/4,215,700
6. Step 6: Final answer
   x = 19,517,331.19