Finding the Third Proportional to 820,897,357.50 and 1,272,164,886

Step by Step Solution

1. Step 1: Write the proportion equation
   820,897,357.50 : 1,272,164,886 = 1,272,164,886 : x
2. Step 2: Convert to fraction form
   820,897,357.50/1,272,164,886 = 1,272,164,886/x
3. Step 3: Cross multiply
   820,897,357.50x = 1,272,164,886 × 1,272,164,886
4. Step 4: Simplify right side
   820,897,357.50x = 1,618,403,497,171,393,024
5. Step 5: Solve for x
   x = 1,618,403,497,171,393,024/820,897,357.50
6. Step 6: Final answer
   x = 1,971,505,307.44