Finding the Third Proportional to 123,300 and 265,312

Step by Step Solution

1. Step 1: Write the proportion equation
   123,300 : 265,312 = 265,312 : x
2. Step 2: Convert to fraction form
   123,300/265,312 = 265,312/x
3. Step 3: Cross multiply
   123,300x = 265,312 × 265,312
4. Step 4: Simplify right side
   123,300x = 70,390,457,344
5. Step 5: Solve for x
   x = 70,390,457,344/123,300
6. Step 6: Final answer
   x = 570,887.73