Finding the Third Proportional to 156,312 and 336,322.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,312 : 336,322.50 = 336,322.50 : x
2. Step 2: Convert to fraction form
   156,312/336,322.50 = 336,322.50/x
3. Step 3: Cross multiply
   156,312x = 336,322.50 × 336,322.50
4. Step 4: Simplify right side
   156,312x = 113,112,824,006.25
5. Step 5: Solve for x
   x = 113,112,824,006.25/156,312
6. Step 6: Final answer
   x = 723,634.94