Finding the Third Proportional to 5,210,208 and 7,869,756

Step by Step Solution

1. Step 1: Write the proportion equation
   5,210,208 : 7,869,756 = 7,869,756 : x
2. Step 2: Convert to fraction form
   5,210,208/7,869,756 = 7,869,756/x
3. Step 3: Cross multiply
   5,210,208x = 7,869,756 × 7,869,756
4. Step 4: Simplify right side
   5,210,208x = 61,933,059,499,536
5. Step 5: Solve for x
   x = 61,933,059,499,536/5,210,208
6. Step 6: Final answer
   x = 11,886,868.91