Finding the Third Proportional to 12,561,736 and 19,923,900

Step by Step Solution

1. Step 1: Write the proportion equation
   12,561,736 : 19,923,900 = 19,923,900 : x
2. Step 2: Convert to fraction form
   12,561,736/19,923,900 = 19,923,900/x
3. Step 3: Cross multiply
   12,561,736x = 19,923,900 × 19,923,900
4. Step 4: Simplify right side
   12,561,736x = 396,961,791,210,000
5. Step 5: Solve for x
   x = 396,961,791,210,000/12,561,736
6. Step 6: Final answer
   x = 31,600,870.39