Finding the Third Proportional to 238,410 and 515,538

Step by Step Solution

1. Step 1: Write the proportion equation
   238,410 : 515,538 = 515,538 : x
2. Step 2: Convert to fraction form
   238,410/515,538 = 515,538/x
3. Step 3: Cross multiply
   238,410x = 515,538 × 515,538
4. Step 4: Simplify right side
   238,410x = 265,779,429,444
5. Step 5: Solve for x
   x = 265,779,429,444/238,410
6. Step 6: Final answer
   x = 1,114,799.84