Finding the Third Proportional to 1,243,424 and 1,977,228

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,424 : 1,977,228 = 1,977,228 : x
2. Step 2: Convert to fraction form
   1,243,424/1,977,228 = 1,977,228/x
3. Step 3: Cross multiply
   1,243,424x = 1,977,228 × 1,977,228
4. Step 4: Simplify right side
   1,243,424x = 3,909,430,563,984
5. Step 5: Solve for x
   x = 3,909,430,563,984/1,243,424
6. Step 6: Final answer
   x = 3,144,084.85