Finding the Third Proportional to 316,657.50 and 473,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   316,657.50 : 473,404.50 = 473,404.50 : x
2. Step 2: Convert to fraction form
   316,657.50/473,404.50 = 473,404.50/x
3. Step 3: Cross multiply
   316,657.50x = 473,404.50 × 473,404.50
4. Step 4: Simplify right side
   316,657.50x = 224,111,820,620.25
5. Step 5: Solve for x
   x = 224,111,820,620.25/316,657.50
6. Step 6: Final answer
   x = 707,742.03