Finding the Third Proportional to 788,172 and 1,222,921

Step by Step Solution

1. Step 1: Write the proportion equation
   788,172 : 1,222,921 = 1,222,921 : x
2. Step 2: Convert to fraction form
   788,172/1,222,921 = 1,222,921/x
3. Step 3: Cross multiply
   788,172x = 1,222,921 × 1,222,921
4. Step 4: Simplify right side
   788,172x = 1,495,535,772,241
5. Step 5: Solve for x
   x = 1,495,535,772,241/788,172
6. Step 6: Final answer
   x = 1,897,473.87