Finding the Third Proportional to 689,581 and 1,070,456

Step by Step Solution

1. Step 1: Write the proportion equation
   689,581 : 1,070,456 = 1,070,456 : x
2. Step 2: Convert to fraction form
   689,581/1,070,456 = 1,070,456/x
3. Step 3: Cross multiply
   689,581x = 1,070,456 × 1,070,456
4. Step 4: Simplify right side
   689,581x = 1,145,876,047,936
5. Step 5: Solve for x
   x = 1,145,876,047,936/689,581
6. Step 6: Final answer
   x = 1,661,698.99