Finding the Third Proportional to 12,299,436 and 19,109,628

Step by Step Solution

1. Step 1: Write the proportion equation
   12,299,436 : 19,109,628 = 19,109,628 : x
2. Step 2: Convert to fraction form
   12,299,436/19,109,628 = 19,109,628/x
3. Step 3: Cross multiply
   12,299,436x = 19,109,628 × 19,109,628
4. Step 4: Simplify right side
   12,299,436x = 365,177,882,298,384
5. Step 5: Solve for x
   x = 365,177,882,298,384/12,299,436
6. Step 6: Final answer
   x = 29,690,620.15