Finding the Third Proportional to 1,215,507 and 2,664,276

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,507 : 2,664,276 = 2,664,276 : x
2. Step 2: Convert to fraction form
   1,215,507/2,664,276 = 2,664,276/x
3. Step 3: Cross multiply
   1,215,507x = 2,664,276 × 2,664,276
4. Step 4: Simplify right side
   1,215,507x = 7,098,366,604,176
5. Step 5: Solve for x
   x = 7,098,366,604,176/1,215,507
6. Step 6: Final answer
   x = 5,839,840.17