Finding the Third Proportional to 12,861,768 and 19,906,200

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861,768 : 19,906,200 = 19,906,200 : x
2. Step 2: Convert to fraction form
   12,861,768/19,906,200 = 19,906,200/x
3. Step 3: Cross multiply
   12,861,768x = 19,906,200 × 19,906,200
4. Step 4: Simplify right side
   12,861,768x = 396,256,798,440,000
5. Step 5: Solve for x
   x = 396,256,798,440,000/12,861,768
6. Step 6: Final answer
   x = 30,808,890.23