Finding the Third Proportional to 4,787,785.50 and 10,239,123

Step by Step Solution

1. Step 1: Write the proportion equation
   4,787,785.50 : 10,239,123 = 10,239,123 : x
2. Step 2: Convert to fraction form
   4,787,785.50/10,239,123 = 10,239,123/x
3. Step 3: Cross multiply
   4,787,785.50x = 10,239,123 × 10,239,123
4. Step 4: Simplify right side
   4,787,785.50x = 104,839,639,809,129
5. Step 5: Solve for x
   x = 104,839,639,809,129/4,787,785.50
6. Step 6: Final answer
   x = 21,897,313.45