Finding the Third Proportional to 4,259,664 and 9,265,680

Step by Step Solution

1. Step 1: Write the proportion equation
   4,259,664 : 9,265,680 = 9,265,680 : x
2. Step 2: Convert to fraction form
   4,259,664/9,265,680 = 9,265,680/x
3. Step 3: Cross multiply
   4,259,664x = 9,265,680 × 9,265,680
4. Step 4: Simplify right side
   4,259,664x = 85,852,825,862,400
5. Step 5: Solve for x
   x = 85,852,825,862,400/4,259,664
6. Step 6: Final answer
   x = 20,154,835.18