Finding the Third Proportional to 245,385 and 501,090

Step by Step Solution

1. Step 1: Write the proportion equation
   245,385 : 501,090 = 501,090 : x
2. Step 2: Convert to fraction form
   245,385/501,090 = 501,090/x
3. Step 3: Cross multiply
   245,385x = 501,090 × 501,090
4. Step 4: Simplify right side
   245,385x = 251,091,188,100
5. Step 5: Solve for x
   x = 251,091,188,100/245,385
6. Step 6: Final answer
   x = 1,023,254.02