Finding the Third Proportional to 2,145,922 and 4,640,312

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,922 : 4,640,312 = 4,640,312 : x
2. Step 2: Convert to fraction form
   2,145,922/4,640,312 = 4,640,312/x
3. Step 3: Cross multiply
   2,145,922x = 4,640,312 × 4,640,312
4. Step 4: Simplify right side
   2,145,922x = 21,532,495,457,344
5. Step 5: Solve for x
   x = 21,532,495,457,344/2,145,922
6. Step 6: Final answer
   x = 10,034,146.38