Finding the Third Proportional to 309,060 and 651,883.50

Step by Step Solution

1. Step 1: Write the proportion equation
   309,060 : 651,883.50 = 651,883.50 : x
2. Step 2: Convert to fraction form
   309,060/651,883.50 = 651,883.50/x
3. Step 3: Cross multiply
   309,060x = 651,883.50 × 651,883.50
4. Step 4: Simplify right side
   309,060x = 424,952,097,572.25
5. Step 5: Solve for x
   x = 424,952,097,572.25/309,060
6. Step 6: Final answer
   x = 1,374,982.52