Finding the Third Proportional to 1,243,420 and 1,977,232

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,420 : 1,977,232 = 1,977,232 : x
2. Step 2: Convert to fraction form
   1,243,420/1,977,232 = 1,977,232/x
3. Step 3: Cross multiply
   1,243,420x = 1,977,232 × 1,977,232
4. Step 4: Simplify right side
   1,243,420x = 3,909,446,381,824
5. Step 5: Solve for x
   x = 3,909,446,381,824/1,243,420
6. Step 6: Final answer
   x = 3,144,107.69