Finding the Third Proportional to 136,429 and 210,475.50

Step by Step Solution

1. Step 1: Write the proportion equation
   136,429 : 210,475.50 = 210,475.50 : x
2. Step 2: Convert to fraction form
   136,429/210,475.50 = 210,475.50/x
3. Step 3: Cross multiply
   136,429x = 210,475.50 × 210,475.50
4. Step 4: Simplify right side
   136,429x = 44,299,936,100.25
5. Step 5: Solve for x
   x = 44,299,936,100.25/136,429
6. Step 6: Final answer
   x = 324,710.55