Finding the Third Proportional to 8,172,864.56 and 17,782,279.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,172,864.56 : 17,782,279.31 = 17,782,279.31 : x
2. Step 2: Convert to fraction form
   8,172,864.56/17,782,279.31 = 17,782,279.31/x
3. Step 3: Cross multiply
   8,172,864.56x = 17,782,279.31 × 17,782,279.31
4. Step 4: Simplify right side
   8,172,864.56x = 316,209,457,547,765.50
5. Step 5: Solve for x
   x = 316,209,457,547,765.50/8,172,864.56
6. Step 6: Final answer
   x = 38,690,162.44