Finding the Third Proportional to 2,174,128 and 4,611,345

Step by Step Solution

1. Step 1: Write the proportion equation
   2,174,128 : 4,611,345 = 4,611,345 : x
2. Step 2: Convert to fraction form
   2,174,128/4,611,345 = 4,611,345/x
3. Step 3: Cross multiply
   2,174,128x = 4,611,345 × 4,611,345
4. Step 4: Simplify right side
   2,174,128x = 21,264,502,709,025
5. Step 5: Solve for x
   x = 21,264,502,709,025/2,174,128
6. Step 6: Final answer
   x = 9,780,704.13