Finding the Third Proportional to 356,314 and 742,111

Step by Step Solution

1. Step 1: Write the proportion equation
   356,314 : 742,111 = 742,111 : x
2. Step 2: Convert to fraction form
   356,314/742,111 = 742,111/x
3. Step 3: Cross multiply
   356,314x = 742,111 × 742,111
4. Step 4: Simplify right side
   356,314x = 550,728,736,321
5. Step 5: Solve for x
   x = 550,728,736,321/356,314
6. Step 6: Final answer
   x = 1,545,627.55