Finding the Third Proportional to 4,386,313 and 9,781,180

Step by Step Solution

1. Step 1: Write the proportion equation
   4,386,313 : 9,781,180 = 9,781,180 : x
2. Step 2: Convert to fraction form
   4,386,313/9,781,180 = 9,781,180/x
3. Step 3: Cross multiply
   4,386,313x = 9,781,180 × 9,781,180
4. Step 4: Simplify right side
   4,386,313x = 95,671,482,192,400
5. Step 5: Solve for x
   x = 95,671,482,192,400/4,386,313
6. Step 6: Final answer
   x = 21,811,366.90