Finding the Third Proportional to 4,787,677 and 10,247,978

Step by Step Solution

1. Step 1: Write the proportion equation
   4,787,677 : 10,247,978 = 10,247,978 : x
2. Step 2: Convert to fraction form
   4,787,677/10,247,978 = 10,247,978/x
3. Step 3: Cross multiply
   4,787,677x = 10,247,978 × 10,247,978
4. Step 4: Simplify right side
   4,787,677x = 105,021,053,088,484
5. Step 5: Solve for x
   x = 105,021,053,088,484/4,787,677
6. Step 6: Final answer
   x = 21,935,701.40