Finding the Third Proportional to 349,654 and 741,140

Step by Step Solution

1. Step 1: Write the proportion equation
   349,654 : 741,140 = 741,140 : x
2. Step 2: Convert to fraction form
   349,654/741,140 = 741,140/x
3. Step 3: Cross multiply
   349,654x = 741,140 × 741,140
4. Step 4: Simplify right side
   349,654x = 549,288,499,600
5. Step 5: Solve for x
   x = 549,288,499,600/349,654
6. Step 6: Final answer
   x = 1,570,948.71