Finding the Third Proportional to 12,691,808 and 19,335,144

Step by Step Solution

1. Step 1: Write the proportion equation
   12,691,808 : 19,335,144 = 19,335,144 : x
2. Step 2: Convert to fraction form
   12,691,808/19,335,144 = 19,335,144/x
3. Step 3: Cross multiply
   12,691,808x = 19,335,144 × 19,335,144
4. Step 4: Simplify right side
   12,691,808x = 373,847,793,500,736
5. Step 5: Solve for x
   x = 373,847,793,500,736/12,691,808
6. Step 6: Final answer
   x = 29,455,834.31