Finding the Third Proportional to 385,143 and 590,710.50

Step by Step Solution

1. Step 1: Write the proportion equation
   385,143 : 590,710.50 = 590,710.50 : x
2. Step 2: Convert to fraction form
   385,143/590,710.50 = 590,710.50/x
3. Step 3: Cross multiply
   385,143x = 590,710.50 × 590,710.50
4. Step 4: Simplify right side
   385,143x = 348,938,894,810.25
5. Step 5: Solve for x
   x = 348,938,894,810.25/385,143
6. Step 6: Final answer
   x = 905,998.28