Finding the Third Proportional to 5,210,212 and 7,869,762

Step by Step Solution

1. Step 1: Write the proportion equation
   5,210,212 : 7,869,762 = 7,869,762 : x
2. Step 2: Convert to fraction form
   5,210,212/7,869,762 = 7,869,762/x
3. Step 3: Cross multiply
   5,210,212x = 7,869,762 × 7,869,762
4. Step 4: Simplify right side
   5,210,212x = 61,933,153,936,644
5. Step 5: Solve for x
   x = 61,933,153,936,644/5,210,212
6. Step 6: Final answer
   x = 11,886,877.91