Finding the Third Proportional to 503,011.50 and 761,020.50

Step by Step Solution

1. Step 1: Write the proportion equation
   503,011.50 : 761,020.50 = 761,020.50 : x
2. Step 2: Convert to fraction form
   503,011.50/761,020.50 = 761,020.50/x
3. Step 3: Cross multiply
   503,011.50x = 761,020.50 × 761,020.50
4. Step 4: Simplify right side
   503,011.50x = 579,152,201,420.25
5. Step 5: Solve for x
   x = 579,152,201,420.25/503,011.50
6. Step 6: Final answer
   x = 1,151,369.70