Finding the Third Proportional to 4,224,768 and 9,122,988

Step by Step Solution

1. Step 1: Write the proportion equation
   4,224,768 : 9,122,988 = 9,122,988 : x
2. Step 2: Convert to fraction form
   4,224,768/9,122,988 = 9,122,988/x
3. Step 3: Cross multiply
   4,224,768x = 9,122,988 × 9,122,988
4. Step 4: Simplify right side
   4,224,768x = 83,228,910,048,144
5. Step 5: Solve for x
   x = 83,228,910,048,144/4,224,768
6. Step 6: Final answer
   x = 19,700,232.07