Finding the Third Proportional to 666,345 and 949,675.50

Step by Step Solution

1. Step 1: Write the proportion equation
   666,345 : 949,675.50 = 949,675.50 : x
2. Step 2: Convert to fraction form
   666,345/949,675.50 = 949,675.50/x
3. Step 3: Cross multiply
   666,345x = 949,675.50 × 949,675.50
4. Step 4: Simplify right side
   666,345x = 901,883,555,300.25
5. Step 5: Solve for x
   x = 901,883,555,300.25/666,345
6. Step 6: Final answer
   x = 1,353,478.39