Finding the Third Proportional to 923,520 and 1,978,440

Step by Step Solution

1. Step 1: Write the proportion equation
   923,520 : 1,978,440 = 1,978,440 : x
2. Step 2: Convert to fraction form
   923,520/1,978,440 = 1,978,440/x
3. Step 3: Cross multiply
   923,520x = 1,978,440 × 1,978,440
4. Step 4: Simplify right side
   923,520x = 3,914,224,833,600
5. Step 5: Solve for x
   x = 3,914,224,833,600/923,520
6. Step 6: Final answer
   x = 4,238,375.82