Finding the Third Proportional to 178,492.50 and 371,781

Step by Step Solution

1. Step 1: Write the proportion equation
   178,492.50 : 371,781 = 371,781 : x
2. Step 2: Convert to fraction form
   178,492.50/371,781 = 371,781/x
3. Step 3: Cross multiply
   178,492.50x = 371,781 × 371,781
4. Step 4: Simplify right side
   178,492.50x = 138,221,111,961
5. Step 5: Solve for x
   x = 138,221,111,961/178,492.50
6. Step 6: Final answer
   x = 774,380.50