Finding the Third Proportional to 815,853 and 1,175,071.50

Step by Step Solution

1. Step 1: Write the proportion equation
   815,853 : 1,175,071.50 = 1,175,071.50 : x
2. Step 2: Convert to fraction form
   815,853/1,175,071.50 = 1,175,071.50/x
3. Step 3: Cross multiply
   815,853x = 1,175,071.50 × 1,175,071.50
4. Step 4: Simplify right side
   815,853x = 1,380,793,030,112.25
5. Step 5: Solve for x
   x = 1,380,793,030,112.25/815,853
6. Step 6: Final answer
   x = 1,692,453.21