Finding the Third Proportional to 5,678,712 and 8,509,284

Step by Step Solution

1. Step 1: Write the proportion equation
   5,678,712 : 8,509,284 = 8,509,284 : x
2. Step 2: Convert to fraction form
   5,678,712/8,509,284 = 8,509,284/x
3. Step 3: Cross multiply
   5,678,712x = 8,509,284 × 8,509,284
4. Step 4: Simplify right side
   5,678,712x = 72,407,914,192,656
5. Step 5: Solve for x
   x = 72,407,914,192,656/5,678,712
6. Step 6: Final answer
   x = 12,750,763.59