Finding the Third Proportional to 2,171,060.72 and 4,640,904.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171,060.72 : 4,640,904.28 = 4,640,904.28 : x
2. Step 2: Convert to fraction form
   2,171,060.72/4,640,904.28 = 4,640,904.28/x
3. Step 3: Cross multiply
   2,171,060.72x = 4,640,904.28 × 4,640,904.28
4. Step 4: Simplify right side
   2,171,060.72x = 21,537,992,547,724.58
5. Step 5: Solve for x
   x = 21,537,992,547,724.58/2,171,060.72
6. Step 6: Final answer
   x = 9,920,492.95