Finding the Third Proportional to 551,157,532 and 816,404,556

Step by Step Solution

1. Step 1: Write the proportion equation
   551,157,532 : 816,404,556 = 816,404,556 : x
2. Step 2: Convert to fraction form
   551,157,532/816,404,556 = 816,404,556/x
3. Step 3: Cross multiply
   551,157,532x = 816,404,556 × 816,404,556
4. Step 4: Simplify right side
   551,157,532x = 666,516,399,057,557,120
5. Step 5: Solve for x
   x = 666,516,399,057,557,120/551,157,532
6. Step 6: Final answer
   x = 1,209,302,895.02