Finding the Third Proportional to 12,653,280 and 19,609,120

Step by Step Solution

1. Step 1: Write the proportion equation
   12,653,280 : 19,609,120 = 19,609,120 : x
2. Step 2: Convert to fraction form
   12,653,280/19,609,120 = 19,609,120/x
3. Step 3: Cross multiply
   12,653,280x = 19,609,120 × 19,609,120
4. Step 4: Simplify right side
   12,653,280x = 384,517,587,174,400
5. Step 5: Solve for x
   x = 384,517,587,174,400/12,653,280
6. Step 6: Final answer
   x = 30,388,767.75