Finding the Third Proportional to 551,973 and 822,127.50

Step by Step Solution

1. Step 1: Write the proportion equation
   551,973 : 822,127.50 = 822,127.50 : x
2. Step 2: Convert to fraction form
   551,973/822,127.50 = 822,127.50/x
3. Step 3: Cross multiply
   551,973x = 822,127.50 × 822,127.50
4. Step 4: Simplify right side
   551,973x = 675,893,626,256.25
5. Step 5: Solve for x
   x = 675,893,626,256.25/551,973
6. Step 6: Final answer
   x = 1,224,504.87