Finding the Third Proportional to 5,135,382 and 7,947,378

Step by Step Solution

1. Step 1: Write the proportion equation
   5,135,382 : 7,947,378 = 7,947,378 : x
2. Step 2: Convert to fraction form
   5,135,382/7,947,378 = 7,947,378/x
3. Step 3: Cross multiply
   5,135,382x = 7,947,378 × 7,947,378
4. Step 4: Simplify right side
   5,135,382x = 63,160,817,074,884
5. Step 5: Solve for x
   x = 63,160,817,074,884/5,135,382
6. Step 6: Final answer
   x = 12,299,146.80