Finding the Third Proportional to 308,430 and 460,084.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,430 : 460,084.50 = 460,084.50 : x
2. Step 2: Convert to fraction form
   308,430/460,084.50 = 460,084.50/x
3. Step 3: Cross multiply
   308,430x = 460,084.50 × 460,084.50
4. Step 4: Simplify right side
   308,430x = 211,677,747,140.25
5. Step 5: Solve for x
   x = 211,677,747,140.25/308,430
6. Step 6: Final answer
   x = 686,307.26