Finding the Third Proportional to 12,612,951 and 19,478,380.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,612,951 : 19,478,380.50 = 19,478,380.50 : x
2. Step 2: Convert to fraction form
   12,612,951/19,478,380.50 = 19,478,380.50/x
3. Step 3: Cross multiply
   12,612,951x = 19,478,380.50 × 19,478,380.50
4. Step 4: Simplify right side
   12,612,951x = 379,407,306,902,780.25
5. Step 5: Solve for x
   x = 379,407,306,902,780.25/12,612,951
6. Step 6: Final answer
   x = 30,080,772.29