Finding the Third Proportional to 4,309,818 and 9,376,310

Step by Step Solution

1. Step 1: Write the proportion equation
   4,309,818 : 9,376,310 = 9,376,310 : x
2. Step 2: Convert to fraction form
   4,309,818/9,376,310 = 9,376,310/x
3. Step 3: Cross multiply
   4,309,818x = 9,376,310 × 9,376,310
4. Step 4: Simplify right side
   4,309,818x = 87,915,189,216,100
5. Step 5: Solve for x
   x = 87,915,189,216,100/4,309,818
6. Step 6: Final answer
   x = 20,398,817.12