Finding the Third Proportional to 130,980 and 286,480.50

Step by Step Solution

1. Step 1: Write the proportion equation
   130,980 : 286,480.50 = 286,480.50 : x
2. Step 2: Convert to fraction form
   130,980/286,480.50 = 286,480.50/x
3. Step 3: Cross multiply
   130,980x = 286,480.50 × 286,480.50
4. Step 4: Simplify right side
   130,980x = 82,071,076,880.25
5. Step 5: Solve for x
   x = 82,071,076,880.25/130,980
6. Step 6: Final answer
   x = 626,592.43