Finding the Third Proportional to 12,613,040 and 19,478,516

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613,040 : 19,478,516 = 19,478,516 : x
2. Step 2: Convert to fraction form
   12,613,040/19,478,516 = 19,478,516/x
3. Step 3: Cross multiply
   12,613,040x = 19,478,516 × 19,478,516
4. Step 4: Simplify right side
   12,613,040x = 379,412,585,562,256
5. Step 5: Solve for x
   x = 379,412,585,562,256/12,613,040
6. Step 6: Final answer
   x = 30,080,978.54