Finding the Third Proportional to 1,226,172 and 2,680,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,226,172 : 2,680,440 = 2,680,440 : x
2. Step 2: Convert to fraction form
   1,226,172/2,680,440 = 2,680,440/x
3. Step 3: Cross multiply
   1,226,172x = 2,680,440 × 2,680,440
4. Step 4: Simplify right side
   1,226,172x = 7,184,758,593,600
5. Step 5: Solve for x
   x = 7,184,758,593,600/1,226,172
6. Step 6: Final answer
   x = 5,859,503.07