Finding the Third Proportional to 12,612,936 and 19,478,360

Step by Step Solution

1. Step 1: Write the proportion equation
   12,612,936 : 19,478,360 = 19,478,360 : x
2. Step 2: Convert to fraction form
   12,612,936/19,478,360 = 19,478,360/x
3. Step 3: Cross multiply
   12,612,936x = 19,478,360 × 19,478,360
4. Step 4: Simplify right side
   12,612,936x = 379,406,508,289,600
5. Step 5: Solve for x
   x = 379,406,508,289,600/12,612,936
6. Step 6: Final answer
   x = 30,080,744.74