Finding the Third Proportional to 216,594 and 348,961.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,594 : 348,961.50 = 348,961.50 : x
2. Step 2: Convert to fraction form
   216,594/348,961.50 = 348,961.50/x
3. Step 3: Cross multiply
   216,594x = 348,961.50 × 348,961.50
4. Step 4: Simplify right side
   216,594x = 121,774,128,482.25
5. Step 5: Solve for x
   x = 121,774,128,482.25/216,594
6. Step 6: Final answer
   x = 562,223.00