Finding the Third Proportional to 316,892.63 and 659,995.50

Step by Step Solution

1. Step 1: Write the proportion equation
   316,892.63 : 659,995.50 = 659,995.50 : x
2. Step 2: Convert to fraction form
   316,892.63/659,995.50 = 659,995.50/x
3. Step 3: Cross multiply
   316,892.63x = 659,995.50 × 659,995.50
4. Step 4: Simplify right side
   316,892.63x = 435,594,060,020.25
5. Step 5: Solve for x
   x = 435,594,060,020.25/316,892.63
6. Step 6: Final answer
   x = 1,374,579.35