Finding the Third Proportional to 12,669,312 and 17,212,820

Step by Step Solution

1. Step 1: Write the proportion equation
   12,669,312 : 17,212,820 = 17,212,820 : x
2. Step 2: Convert to fraction form
   12,669,312/17,212,820 = 17,212,820/x
3. Step 3: Cross multiply
   12,669,312x = 17,212,820 × 17,212,820
4. Step 4: Simplify right side
   12,669,312x = 296,281,172,352,400
5. Step 5: Solve for x
   x = 296,281,172,352,400/12,669,312
6. Step 6: Final answer
   x = 23,385,734.94