Finding the Third Proportional to 324,465 and 698,828.50

Step by Step Solution

1. Step 1: Write the proportion equation
   324,465 : 698,828.50 = 698,828.50 : x
2. Step 2: Convert to fraction form
   324,465/698,828.50 = 698,828.50/x
3. Step 3: Cross multiply
   324,465x = 698,828.50 × 698,828.50
4. Step 4: Simplify right side
   324,465x = 488,361,272,412.25
5. Step 5: Solve for x
   x = 488,361,272,412.25/324,465
6. Step 6: Final answer
   x = 1,505,127.74