Finding the Third Proportional to 4,635,982 and 9,402,978

Step by Step Solution

1. Step 1: Write the proportion equation
   4,635,982 : 9,402,978 = 9,402,978 : x
2. Step 2: Convert to fraction form
   4,635,982/9,402,978 = 9,402,978/x
3. Step 3: Cross multiply
   4,635,982x = 9,402,978 × 9,402,978
4. Step 4: Simplify right side
   4,635,982x = 88,415,995,268,484
5. Step 5: Solve for x
   x = 88,415,995,268,484/4,635,982
6. Step 6: Final answer
   x = 19,071,686.49