Finding the Third Proportional to 1,312,200 and 1,676,700

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312,200 : 1,676,700 = 1,676,700 : x
2. Step 2: Convert to fraction form
   1,312,200/1,676,700 = 1,676,700/x
3. Step 3: Cross multiply
   1,312,200x = 1,676,700 × 1,676,700
4. Step 4: Simplify right side
   1,312,200x = 2,811,322,890,000
5. Step 5: Solve for x
   x = 2,811,322,890,000/1,312,200
6. Step 6: Final answer
   x = 2,142,450