Finding the Third Proportional to 147,590 and 316,680.50

Step by Step Solution

1. Step 1: Write the proportion equation
   147,590 : 316,680.50 = 316,680.50 : x
2. Step 2: Convert to fraction form
   147,590/316,680.50 = 316,680.50/x
3. Step 3: Cross multiply
   147,590x = 316,680.50 × 316,680.50
4. Step 4: Simplify right side
   147,590x = 100,286,539,080.25
5. Step 5: Solve for x
   x = 100,286,539,080.25/147,590
6. Step 6: Final answer
   x = 679,494.13