Finding the Third Proportional to 4,422,536 and 9,290,680

Step by Step Solution

1. Step 1: Write the proportion equation
   4,422,536 : 9,290,680 = 9,290,680 : x
2. Step 2: Convert to fraction form
   4,422,536/9,290,680 = 9,290,680/x
3. Step 3: Cross multiply
   4,422,536x = 9,290,680 × 9,290,680
4. Step 4: Simplify right side
   4,422,536x = 86,316,734,862,400
5. Step 5: Solve for x
   x = 86,316,734,862,400/4,422,536
6. Step 6: Final answer
   x = 19,517,474.78