Finding the Third Proportional to 1,212,218 and 2,552,236

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212,218 : 2,552,236 = 2,552,236 : x
2. Step 2: Convert to fraction form
   1,212,218/2,552,236 = 2,552,236/x
3. Step 3: Cross multiply
   1,212,218x = 2,552,236 × 2,552,236
4. Step 4: Simplify right side
   1,212,218x = 6,513,908,599,696
5. Step 5: Solve for x
   x = 6,513,908,599,696/1,212,218
6. Step 6: Final answer
   x = 5,373,545.52