Finding the Third Proportional to 2,680,380 and 5,780,664

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680,380 : 5,780,664 = 5,780,664 : x
2. Step 2: Convert to fraction form
   2,680,380/5,780,664 = 5,780,664/x
3. Step 3: Cross multiply
   2,680,380x = 5,780,664 × 5,780,664
4. Step 4: Simplify right side
   2,680,380x = 33,416,076,280,896
5. Step 5: Solve for x
   x = 33,416,076,280,896/2,680,380
6. Step 6: Final answer
   x = 12,466,917.48