Finding the Third Proportional to 687,188 and 1,070,030

Step by Step Solution

1. Step 1: Write the proportion equation
   687,188 : 1,070,030 = 1,070,030 : x
2. Step 2: Convert to fraction form
   687,188/1,070,030 = 1,070,030/x
3. Step 3: Cross multiply
   687,188x = 1,070,030 × 1,070,030
4. Step 4: Simplify right side
   687,188x = 1,144,964,200,900
5. Step 5: Solve for x
   x = 1,144,964,200,900/687,188
6. Step 6: Final answer
   x = 1,666,158.61