Finding the Third Proportional to 12,543,772 and 17,664,972

Step by Step Solution

1. Step 1: Write the proportion equation
   12,543,772 : 17,664,972 = 17,664,972 : x
2. Step 2: Convert to fraction form
   12,543,772/17,664,972 = 17,664,972/x
3. Step 3: Cross multiply
   12,543,772x = 17,664,972 × 17,664,972
4. Step 4: Simplify right side
   12,543,772x = 312,051,235,760,784
5. Step 5: Solve for x
   x = 312,051,235,760,784/12,543,772
6. Step 6: Final answer
   x = 24,876,985.63