Finding the Third Proportional to 689,372 and 1,034,788

Step by Step Solution

1. Step 1: Write the proportion equation
   689,372 : 1,034,788 = 1,034,788 : x
2. Step 2: Convert to fraction form
   689,372/1,034,788 = 1,034,788/x
3. Step 3: Cross multiply
   689,372x = 1,034,788 × 1,034,788
4. Step 4: Simplify right side
   689,372x = 1,070,786,204,944
5. Step 5: Solve for x
   x = 1,070,786,204,944/689,372
6. Step 6: Final answer
   x = 1,553,277.77