Finding the Third Proportional to 133,300 and 292,431.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,300 : 292,431.50 = 292,431.50 : x
2. Step 2: Convert to fraction form
   133,300/292,431.50 = 292,431.50/x
3. Step 3: Cross multiply
   133,300x = 292,431.50 × 292,431.50
4. Step 4: Simplify right side
   133,300x = 85,516,182,192.25
5. Step 5: Solve for x
   x = 85,516,182,192.25/133,300
6. Step 6: Final answer
   x = 641,531.75