Finding the Third Proportional to 139,988.25 and 307,192.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,988.25 : 307,192.50 = 307,192.50 : x
2. Step 2: Convert to fraction form
   139,988.25/307,192.50 = 307,192.50/x
3. Step 3: Cross multiply
   139,988.25x = 307,192.50 × 307,192.50
4. Step 4: Simplify right side
   139,988.25x = 94,367,232,056.25
5. Step 5: Solve for x
   x = 94,367,232,056.25/139,988.25
6. Step 6: Final answer
   x = 674,108.23