Finding the Third Proportional to 513,116 and 804,922.50

Step by Step Solution

1. Step 1: Write the proportion equation
   513,116 : 804,922.50 = 804,922.50 : x
2. Step 2: Convert to fraction form
   513,116/804,922.50 = 804,922.50/x
3. Step 3: Cross multiply
   513,116x = 804,922.50 × 804,922.50
4. Step 4: Simplify right side
   513,116x = 647,900,231,006.25
5. Step 5: Solve for x
   x = 647,900,231,006.25/513,116
6. Step 6: Final answer
   x = 1,262,677.90