Finding the Third Proportional to 551,157,525.50 and 816,404,546

Step by Step Solution

1. Step 1: Write the proportion equation
   551,157,525.50 : 816,404,546 = 816,404,546 : x
2. Step 2: Convert to fraction form
   551,157,525.50/816,404,546 = 816,404,546/x
3. Step 3: Cross multiply
   551,157,525.50x = 816,404,546 × 816,404,546
4. Step 4: Simplify right side
   551,157,525.50x = 666,516,382,729,466,112
5. Step 5: Solve for x
   x = 666,516,382,729,466,112/551,157,525.50
6. Step 6: Final answer
   x = 1,209,302,879.65