Finding the Third Proportional to 137,323 and 212,518.50

Step by Step Solution

1. Step 1: Write the proportion equation
   137,323 : 212,518.50 = 212,518.50 : x
2. Step 2: Convert to fraction form
   137,323/212,518.50 = 212,518.50/x
3. Step 3: Cross multiply
   137,323x = 212,518.50 × 212,518.50
4. Step 4: Simplify right side
   137,323x = 45,164,112,842.25
5. Step 5: Solve for x
   x = 45,164,112,842.25/137,323
6. Step 6: Final answer
   x = 328,889.65