Finding the Third Proportional to 5,289,246 and 7,856,109

Step by Step Solution

1. Step 1: Write the proportion equation
   5,289,246 : 7,856,109 = 7,856,109 : x
2. Step 2: Convert to fraction form
   5,289,246/7,856,109 = 7,856,109/x
3. Step 3: Cross multiply
   5,289,246x = 7,856,109 × 7,856,109
4. Step 4: Simplify right side
   5,289,246x = 61,718,448,619,881
5. Step 5: Solve for x
   x = 61,718,448,619,881/5,289,246
6. Step 6: Final answer
   x = 11,668,666.69