Finding the Third Proportional to 4,147,642 and 8,626,368

Step by Step Solution

1. Step 1: Write the proportion equation
   4,147,642 : 8,626,368 = 8,626,368 : x
2. Step 2: Convert to fraction form
   4,147,642/8,626,368 = 8,626,368/x
3. Step 3: Cross multiply
   4,147,642x = 8,626,368 × 8,626,368
4. Step 4: Simplify right side
   4,147,642x = 74,414,224,871,424
5. Step 5: Solve for x
   x = 74,414,224,871,424/4,147,642
6. Step 6: Final answer
   x = 17,941,332.66