Finding the Third Proportional to 4,471,411 and 9,698,978

Step by Step Solution

1. Step 1: Write the proportion equation
   4,471,411 : 9,698,978 = 9,698,978 : x
2. Step 2: Convert to fraction form
   4,471,411/9,698,978 = 9,698,978/x
3. Step 3: Cross multiply
   4,471,411x = 9,698,978 × 9,698,978
4. Step 4: Simplify right side
   4,471,411x = 94,070,174,244,484
5. Step 5: Solve for x
   x = 94,070,174,244,484/4,471,411
6. Step 6: Final answer
   x = 21,038,140.81