Finding the Third Proportional to 8,633,490 and 12,472,892

Step by Step Solution

1. Step 1: Write the proportion equation
   8,633,490 : 12,472,892 = 12,472,892 : x
2. Step 2: Convert to fraction form
   8,633,490/12,472,892 = 12,472,892/x
3. Step 3: Cross multiply
   8,633,490x = 12,472,892 × 12,472,892
4. Step 4: Simplify right side
   8,633,490x = 155,573,034,843,664
5. Step 5: Solve for x
   x = 155,573,034,843,664/8,633,490
6. Step 6: Final answer
   x = 18,019,715.65