Finding the Third Proportional to 12,440,988 and 19,309,158

Step by Step Solution

1. Step 1: Write the proportion equation
   12,440,988 : 19,309,158 = 19,309,158 : x
2. Step 2: Convert to fraction form
   12,440,988/19,309,158 = 19,309,158/x
3. Step 3: Cross multiply
   12,440,988x = 19,309,158 × 19,309,158
4. Step 4: Simplify right side
   12,440,988x = 372,843,582,668,964
5. Step 5: Solve for x
   x = 372,843,582,668,964/12,440,988
6. Step 6: Final answer
   x = 29,968,968.92