Finding the Third Proportional to 402,298 and 607,547.50

Step by Step Solution

1. Step 1: Write the proportion equation
   402,298 : 607,547.50 = 607,547.50 : x
2. Step 2: Convert to fraction form
   402,298/607,547.50 = 607,547.50/x
3. Step 3: Cross multiply
   402,298x = 607,547.50 × 607,547.50
4. Step 4: Simplify right side
   402,298x = 369,113,964,756.25
5. Step 5: Solve for x
   x = 369,113,964,756.25/402,298
6. Step 6: Final answer
   x = 917,513.80