Finding the Third Proportional to 687,192 and 1,070,036

Step by Step Solution

1. Step 1: Write the proportion equation
   687,192 : 1,070,036 = 1,070,036 : x
2. Step 2: Convert to fraction form
   687,192/1,070,036 = 1,070,036/x
3. Step 3: Cross multiply
   687,192x = 1,070,036 × 1,070,036
4. Step 4: Simplify right side
   687,192x = 1,144,977,041,296
5. Step 5: Solve for x
   x = 1,144,977,041,296/687,192
6. Step 6: Final answer
   x = 1,666,167.59