Finding the Third Proportional to 381,460.50 and 590,128.31

Step by Step Solution

1. Step 1: Write the proportion equation
   381,460.50 : 590,128.31 = 590,128.31 : x
2. Step 2: Convert to fraction form
   381,460.50/590,128.31 = 590,128.31/x
3. Step 3: Cross multiply
   381,460.50x = 590,128.31 × 590,128.31
4. Step 4: Simplify right side
   381,460.50x = 348,251,425,214.10
5. Step 5: Solve for x
   x = 348,251,425,214.10/381,460.50
6. Step 6: Final answer
   x = 912,942.30