Finding the Third Proportional to 257,575 and 560,911.50

Step by Step Solution

1. Step 1: Write the proportion equation
   257,575 : 560,911.50 = 560,911.50 : x
2. Step 2: Convert to fraction form
   257,575/560,911.50 = 560,911.50/x
3. Step 3: Cross multiply
   257,575x = 560,911.50 × 560,911.50
4. Step 4: Simplify right side
   257,575x = 314,621,710,832.25
5. Step 5: Solve for x
   x = 314,621,710,832.25/257,575
6. Step 6: Final answer
   x = 1,221,476.12