Finding the Third Proportional to 523,128 and 740,431.50

Step by Step Solution

1. Step 1: Write the proportion equation
   523,128 : 740,431.50 = 740,431.50 : x
2. Step 2: Convert to fraction form
   523,128/740,431.50 = 740,431.50/x
3. Step 3: Cross multiply
   523,128x = 740,431.50 × 740,431.50
4. Step 4: Simplify right side
   523,128x = 548,238,806,192.25
5. Step 5: Solve for x
   x = 548,238,806,192.25/523,128
6. Step 6: Final answer
   x = 1,048,001.27