Finding the Third Proportional to 1,186,317 and 2,559,258

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186,317 : 2,559,258 = 2,559,258 : x
2. Step 2: Convert to fraction form
   1,186,317/2,559,258 = 2,559,258/x
3. Step 3: Cross multiply
   1,186,317x = 2,559,258 × 2,559,258
4. Step 4: Simplify right side
   1,186,317x = 6,549,801,510,564
5. Step 5: Solve for x
   x = 6,549,801,510,564/1,186,317
6. Step 6: Final answer
   x = 5,521,122.53