Finding the Third Proportional to 543,172.50 and 798,111

Step by Step Solution

1. Step 1: Write the proportion equation
   543,172.50 : 798,111 = 798,111 : x
2. Step 2: Convert to fraction form
   543,172.50/798,111 = 798,111/x
3. Step 3: Cross multiply
   543,172.50x = 798,111 × 798,111
4. Step 4: Simplify right side
   543,172.50x = 636,981,168,321
5. Step 5: Solve for x
   x = 636,981,168,321/543,172.50
6. Step 6: Final answer
   x = 1,172,705.11