Finding the Third Proportional to 340,119 and 742,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   340,119 : 742,405.50 = 742,405.50 : x
2. Step 2: Convert to fraction form
   340,119/742,405.50 = 742,405.50/x
3. Step 3: Cross multiply
   340,119x = 742,405.50 × 742,405.50
4. Step 4: Simplify right side
   340,119x = 551,165,926,430.25
5. Step 5: Solve for x
   x = 551,165,926,430.25/340,119
6. Step 6: Final answer
   x = 1,620,509.08