Finding the Third Proportional to 8,429,644 and 12,045,786

Step by Step Solution

1. Step 1: Write the proportion equation
   8,429,644 : 12,045,786 = 12,045,786 : x
2. Step 2: Convert to fraction form
   8,429,644/12,045,786 = 12,045,786/x
3. Step 3: Cross multiply
   8,429,644x = 12,045,786 × 12,045,786
4. Step 4: Simplify right side
   8,429,644x = 145,100,960,357,796
5. Step 5: Solve for x
   x = 145,100,960,357,796/8,429,644
6. Step 6: Final answer
   x = 17,213,177.73