Finding the Third Proportional to 292,150.50 and 438,406.50

Step by Step Solution

1. Step 1: Write the proportion equation
   292,150.50 : 438,406.50 = 438,406.50 : x
2. Step 2: Convert to fraction form
   292,150.50/438,406.50 = 438,406.50/x
3. Step 3: Cross multiply
   292,150.50x = 438,406.50 × 438,406.50
4. Step 4: Simplify right side
   292,150.50x = 192,200,259,242.25
5. Step 5: Solve for x
   x = 192,200,259,242.25/292,150.50
6. Step 6: Final answer
   x = 657,880.99