Finding the Third Proportional to 12,691,872 and 19,335,240

Step by Step Solution

1. Step 1: Write the proportion equation
   12,691,872 : 19,335,240 = 19,335,240 : x
2. Step 2: Convert to fraction form
   12,691,872/19,335,240 = 19,335,240/x
3. Step 3: Cross multiply
   12,691,872x = 19,335,240 × 19,335,240
4. Step 4: Simplify right side
   12,691,872x = 373,851,505,857,600
5. Step 5: Solve for x
   x = 373,851,505,857,600/12,691,872
6. Step 6: Final answer
   x = 29,455,978.27