Finding the Third Proportional to 4,189,151 and 9,124,789

Step by Step Solution

1. Step 1: Write the proportion equation
   4,189,151 : 9,124,789 = 9,124,789 : x
2. Step 2: Convert to fraction form
   4,189,151/9,124,789 = 9,124,789/x
3. Step 3: Cross multiply
   4,189,151x = 9,124,789 × 9,124,789
4. Step 4: Simplify right side
   4,189,151x = 83,261,774,294,521
5. Step 5: Solve for x
   x = 83,261,774,294,521/4,189,151
6. Step 6: Final answer
   x = 19,875,572.47