Finding the Third Proportional to 356,685.50 and 742,835

Step by Step Solution

1. Step 1: Write the proportion equation
   356,685.50 : 742,835 = 742,835 : x
2. Step 2: Convert to fraction form
   356,685.50/742,835 = 742,835/x
3. Step 3: Cross multiply
   356,685.50x = 742,835 × 742,835
4. Step 4: Simplify right side
   356,685.50x = 551,803,837,225
5. Step 5: Solve for x
   x = 551,803,837,225/356,685.50
6. Step 6: Final answer
   x = 1,547,031.87