Finding the Third Proportional to 12,861,800 and 19,906,248

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861,800 : 19,906,248 = 19,906,248 : x
2. Step 2: Convert to fraction form
   12,861,800/19,906,248 = 19,906,248/x
3. Step 3: Cross multiply
   12,861,800x = 19,906,248 × 19,906,248
4. Step 4: Simplify right side
   12,861,800x = 396,258,709,437,504
5. Step 5: Solve for x
   x = 396,258,709,437,504/12,861,800
6. Step 6: Final answer
   x = 30,808,962.15