Finding the Third Proportional to 8,215,727.63 and 12,771,622.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,215,727.63 : 12,771,622.69 = 12,771,622.69 : x
2. Step 2: Convert to fraction form
   8,215,727.63/12,771,622.69 = 12,771,622.69/x
3. Step 3: Cross multiply
   8,215,727.63x = 12,771,622.69 × 12,771,622.69
4. Step 4: Simplify right side
   8,215,727.63x = 163,114,346,071,864.72
5. Step 5: Solve for x
   x = 163,114,346,071,864.72/8,215,727.63
6. Step 6: Final answer
   x = 19,853,913.56