Finding the Third Proportional to 689,148 and 1,488,996

Step by Step Solution

1. Step 1: Write the proportion equation
   689,148 : 1,488,996 = 1,488,996 : x
2. Step 2: Convert to fraction form
   689,148/1,488,996 = 1,488,996/x
3. Step 3: Cross multiply
   689,148x = 1,488,996 × 1,488,996
4. Step 4: Simplify right side
   689,148x = 2,217,109,088,016
5. Step 5: Solve for x
   x = 2,217,109,088,016/689,148
6. Step 6: Final answer
   x = 3,217,174.09