Finding the Third Proportional to 12,728,592 and 19,705,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,728,592 : 19,705,066.50 = 19,705,066.50 : x
2. Step 2: Convert to fraction form
   12,728,592/19,705,066.50 = 19,705,066.50/x
3. Step 3: Cross multiply
   12,728,592x = 19,705,066.50 × 19,705,066.50
4. Step 4: Simplify right side
   12,728,592x = 388,289,645,769,422.25
5. Step 5: Solve for x
   x = 388,289,645,769,422.25/12,728,592
6. Step 6: Final answer
   x = 30,505,310.07