Finding the Third Proportional to 3,899,844 and 8,695,880

Step by Step Solution

1. Step 1: Write the proportion equation
   3,899,844 : 8,695,880 = 8,695,880 : x
2. Step 2: Convert to fraction form
   3,899,844/8,695,880 = 8,695,880/x
3. Step 3: Cross multiply
   3,899,844x = 8,695,880 × 8,695,880
4. Step 4: Simplify right side
   3,899,844x = 75,618,328,974,400
5. Step 5: Solve for x
   x = 75,618,328,974,400/3,899,844
6. Step 6: Final answer
   x = 19,390,090.73