Finding the Third Proportional to 525,688 and 804,300

Step by Step Solution

1. Step 1: Write the proportion equation
   525,688 : 804,300 = 804,300 : x
2. Step 2: Convert to fraction form
   525,688/804,300 = 804,300/x
3. Step 3: Cross multiply
   525,688x = 804,300 × 804,300
4. Step 4: Simplify right side
   525,688x = 646,898,490,000
5. Step 5: Solve for x
   x = 646,898,490,000/525,688
6. Step 6: Final answer
   x = 1,230,574.96