Finding the Third Proportional to 520,515 and 709,114.50

Step by Step Solution

1. Step 1: Write the proportion equation
   520,515 : 709,114.50 = 709,114.50 : x
2. Step 2: Convert to fraction form
   520,515/709,114.50 = 709,114.50/x
3. Step 3: Cross multiply
   520,515x = 709,114.50 × 709,114.50
4. Step 4: Simplify right side
   520,515x = 502,843,374,110.25
5. Step 5: Solve for x
   x = 502,843,374,110.25/520,515
6. Step 6: Final answer
   x = 966,049.73