Finding the Third Proportional to 520,624 and 804,531.50

Step by Step Solution

1. Step 1: Write the proportion equation
   520,624 : 804,531.50 = 804,531.50 : x
2. Step 2: Convert to fraction form
   520,624/804,531.50 = 804,531.50/x
3. Step 3: Cross multiply
   520,624x = 804,531.50 × 804,531.50
4. Step 4: Simplify right side
   520,624x = 647,270,934,492.25
5. Step 5: Solve for x
   x = 647,270,934,492.25/520,624
6. Step 6: Final answer
   x = 1,243,259.89