Finding the Third Proportional to 349,086 and 542,761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   349,086 : 542,761.50 = 542,761.50 : x
2. Step 2: Convert to fraction form
   349,086/542,761.50 = 542,761.50/x
3. Step 3: Cross multiply
   349,086x = 542,761.50 × 542,761.50
4. Step 4: Simplify right side
   349,086x = 294,590,045,882.25
5. Step 5: Solve for x
   x = 294,590,045,882.25/349,086
6. Step 6: Final answer
   x = 843,889.60