Finding the Third Proportional to 420,889.50 and 901,557

Step by Step Solution

1. Step 1: Write the proportion equation
   420,889.50 : 901,557 = 901,557 : x
2. Step 2: Convert to fraction form
   420,889.50/901,557 = 901,557/x
3. Step 3: Cross multiply
   420,889.50x = 901,557 × 901,557
4. Step 4: Simplify right side
   420,889.50x = 812,805,024,249
5. Step 5: Solve for x
   x = 812,805,024,249/420,889.50
6. Step 6: Final answer
   x = 1,931,160.14