Finding the Third Proportional to 666,486 and 976,003.50

Step by Step Solution

1. Step 1: Write the proportion equation
   666,486 : 976,003.50 = 976,003.50 : x
2. Step 2: Convert to fraction form
   666,486/976,003.50 = 976,003.50/x
3. Step 3: Cross multiply
   666,486x = 976,003.50 × 976,003.50
4. Step 4: Simplify right side
   666,486x = 952,582,832,012.25
5. Step 5: Solve for x
   x = 952,582,832,012.25/666,486
6. Step 6: Final answer
   x = 1,429,261.58