Finding the Third Proportional to 154,798 and 316,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,798 : 316,156.50 = 316,156.50 : x
2. Step 2: Convert to fraction form
   154,798/316,156.50 = 316,156.50/x
3. Step 3: Cross multiply
   154,798x = 316,156.50 × 316,156.50
4. Step 4: Simplify right side
   154,798x = 99,954,932,492.25
5. Step 5: Solve for x
   x = 99,954,932,492.25/154,798
6. Step 6: Final answer
   x = 645,712.04