Finding the Third Proportional to 2,174,278 and 5,115,942

Step by Step Solution

1. Step 1: Write the proportion equation
   2,174,278 : 5,115,942 = 5,115,942 : x
2. Step 2: Convert to fraction form
   2,174,278/5,115,942 = 5,115,942/x
3. Step 3: Cross multiply
   2,174,278x = 5,115,942 × 5,115,942
4. Step 4: Simplify right side
   2,174,278x = 26,172,862,547,364
5. Step 5: Solve for x
   x = 26,172,862,547,364/2,174,278
6. Step 6: Final answer
   x = 12,037,495.92