Finding the Third Proportional to 141,912 and 309,946.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,912 : 309,946.50 = 309,946.50 : x
2. Step 2: Convert to fraction form
   141,912/309,946.50 = 309,946.50/x
3. Step 3: Cross multiply
   141,912x = 309,946.50 × 309,946.50
4. Step 4: Simplify right side
   141,912x = 96,066,832,862.25
5. Step 5: Solve for x
   x = 96,066,832,862.25/141,912
6. Step 6: Final answer
   x = 676,946.51