Finding the Third Proportional to 60,688 and 91,030

Step by Step Solution

1. Step 1: Write the proportion equation
   60,688 : 91,030 = 91,030 : x
2. Step 2: Convert to fraction form
   60,688/91,030 = 91,030/x
3. Step 3: Cross multiply
   60,688x = 91,030 × 91,030
4. Step 4: Simplify right side
   60,688x = 8,286,460,900
5. Step 5: Solve for x
   x = 8,286,460,900/60,688
6. Step 6: Final answer
   x = 136,542.00